Usually by the end of day 3 - 72 hrs - all the issues are behind you. I have caved by hour 48 usually, if I ate a High fat low carb meal before the fast I usually go through 48 hrs and 72 hrs without any cravings and past that its a down hill slide.
Yesterday I ate an ungodly amount of meats cheese and fats. Its simply made life so much easier - 32 hr dry fast so far and I feel like going 15+ days - till true hunger comes back.
Thanks.
Srinath.